雄激素诱导翻译对调节雄激素受体活性的影响
Justus S Israel1, Laura-Maria Marcelin1, Sherif Mehralivand1
1Department of Urology, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307, Dresden, Germany.
Biology direct
|November 12, 2024
概括
雄激素受体 (AR) 激活增强了激素敏感前列腺癌 (HSPC) 中的AR蛋白转化,增加了其活性. 这种机制在抵抗割的前列腺癌 (CRPC) 中发生变化,导致治疗耐药性.
科学领域:
- 分子生物学分子生物学
- 在瘤学瘤学.
- 生物化学 生物化学
背景情况:
- 失调的雄激素受体 (AR) 活性驱动前列腺癌 (PCa) 的进展.
- 抗雄激素治疗对于转移性PCa至关重要,但通常会遇到药物耐药性.
- 抗逆转录蛋白稳定性对抗逆转录蛋白信号传递和治疗耐药性的作用尚不清楚.
研究的目的:
- 研究AR蛋白变化在交易性中的作用.
- 阐明PCa中AR蛋白调节的机制.
- 评估AR蛋白的稳定性作为PCa的潜在治疗点.
主要方法:
- 使用LNCaP,C4-2和22Rv1细胞系,用R1881,恩扎胺,环胺和洛卡格拉米德进行治疗.
- 进行了质谱和西方涂抹,以分析AR蛋白水平,局部化和相关途径.
- 使用qPCR和抑制剂实验评估AR交易性.
主要成果:
- 激素敏感前列腺癌 (HSPC) 细胞中的AR激活通过增加翻译来提高AR蛋白水平.
- 这种对AR活性的翻译调节在抵抗割的PCa (CRPC) 和抵抗恩扎胺的细胞中不太明显或不存在.
- 转化抑制抑制了HSPC细胞中的AR转活,模仿了酶胺的作用,但对抗性细胞系的影响很小.
结论:
- 在HSPC中AR激活通过促进翻译,放大AR活性来提高AR蛋白水平.
- 这种AR转化调节机制在抵抗割的前列腺癌中失调.
- 针对AR翻译可能为PCa提供新的治疗策略.
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